TBBS Rubber Accelerator (N-tert-Butyl-2-benzothiazolesulfenamide) from Mexico
TBBS is a widely used delayed-action accelerator for NR and SR compounds in tire treads and sidewalls. Its aromatic benzothiazole sulfenamide structure mandates classification under HTS 3812.10.1000.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit batch certificates of analysis; ensure proper UN packaging group classification; pre-register with US EPA for new chemical introductions